Adjusted battery level image in Student GUI to onlz re-draw when image changes. Tested and seems to be stable.

Adjusted GUI so that all display boxes are checked, and so that the scaling is applied to a CF when it is added (push_back) into the crazyflies_vector

Started on making the Parameter Service more generic, compiled and tested, still needs full implementaiton

System prepared to start developing MPC controller. Included estimation part and crazyflie_angle_mode part. Need to clean a bit and test it in the real system, but it should work